Gebildet 6 x Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch, Magnet Close – Connect the Circuit, Magnet Far – Cut the Circuit, (Cylindric, Brown)

Gebildet 6pcs Recessed Wired Security Window Gate Contact Sensor Alarm Magnetic Reed Switch, Magnet Near - Connect Circuit, Magnet Away - Break Circuit,Magnetic Switch(Cylindrical,Brown)

Gebildet 3 Sets NO/NC Black Magnetic Switch Wiring Recessed Door Sensor Hidden Window Contact Reed Switch for Access Control Replace Alarm System